CTH 6200 Operating Instructions Sept 2004

Operating Instructions

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Operating Instructions Betriebsanleitung

Hand-Held Thermometer

CTH 6200

Hand-Held Thermometer CTH 6200

Page 3 - 22

Betriebsanleitung Hand-Held Thermometer

Seite 23 - 41

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GB Operating Instructions Hand-Held Thermometer

WIKAWIKA Operating Betriebsanleitung Instructions Hand-Held Thermometer

Hand-Held Thermometer CTH 6200

Contents

1. General 1.1 Safety Instructions 1.2 Operation and maintainance advice 1.3 Connections 1.4 Display 1.5 Basic operation 2. Configuration 2.1 (UNIT) Temperature unit 2.2 (rES) Display resolution 2.3 (Lin E.751) Sensor curve 2.4 (OFFs) Zero point correction / Offset 2.5 (Scal) Scale correction 2.6 (P.oFF) Power off function 2.7 (Out) Serial Interface 2.8 (ADR.) Interface-Base address 2.9 (AL.) Alarm 2.10 (CLOC) Real time clock 3. Operation of Logger 3.1 "FUNC-STOR": Storing single measurements 3.2 "FUNC-CYCL": Automatic recording with selectable Cycle-Time 4. General information about temperature sensors 4.1 Available temperature sensors

4 5 6 7 8 8 12 12 12 13 13 13 14 14 14 14 14 15 15 16

The serial interface

Error and system messages

Calibration services

Specification

Accessories

18 18

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Information This symbol provides you with information, notes an tips.

Warning! This Symbol warns you against actions that can cause damage to persons or to the instrument.

WIKA Betriebsanleitung Operating Instructions Hand-Held Hand-Held Thermometer Thermometer

Hand-Held Thermometer CTH 6200

1. General

In the following chapters detailed information on the hand-held thermometer CTH 6200 and its proper use can be found. Should you require further information, or should there be problems which are not dealt with in detail in the operating instructions, please contact the address listed on the last page. The factory calibration of the instruments are according to respective international guidelines. The warranty period for the hand-held thermometer CTH 6200 is 24 months according to the general terms of supply of ZVEI. All guarantee claims lapse if the appliance is put to improper use or if the operating instructions are not observed or if an attempt is made to open the appliance. We also point out that the contents of these operating instructions does not form part of an earlier or existing agreement, assurance or legal relationship or is meant to change these. All obligations of WIKA Alexander Wiegand GmbH & Co. KG result from the respective sales contract and the general business terms of WIKA Alexander Wiegand GmbH & Co. KG. WIKA is a registered trade mark of WIKA Alexander Wiegand GmbH & Co. KG. Names of companies or products mentioned in this handbook are registered trade marks of these manufacturers. We reserve the right to effect reasonable changes on the basis of technical improvements. Any reproduction of this manual or parts thereof by any means is prohibited.

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WIKAWIKA Operating Betriebsanleitung Instructions Hand-Held Thermometer

Hand-Held Thermometer CTH 6200

1.1 Safety Instructions This device has been designed and tested in accordance with the safety regulations for electronic devices. However, its trouble-free operation and reliability cannot be guaranteed unless the standard safety measures and special safety advises given in this manual will be adhered to when using the device. 1. Trouble-free operation and reliability of the device can only be guaranteed if the device is not Subjected to any other climatic conditions than those stated under "Specification". 2. Device and sensors have to be handled with care (don't throw, hit, etc.). Protect plugs and sockets from soiling. 3. If the device is transported from a cold to a warm environment condensation may cause in a failure of the function. In such a case make sure the device temperature has adjusted to the ambient temperature before trying a new start-up. 4. If device is to be connected to other devices (e.g. via serial interface) the circuitry has to be designed most carefully. Internal connection in third party devices may result in not-permissible voltages impairing or destroying the device or another device connected. If device is operated with a defective mains power supply (e.g. short circuit from mains voltage to output voltage) this may result in hazardous voltages at the device (e.g. at sensor socket or interface). 5. If there is a risk whatsoever involved in running it, the device has to be switched off immediately and to be marked accordingly to avoid re-starting.

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Operator safety may be a risk if: ■ there is visible damage to the device ■ the device is not working as specified ■ the device has been stored under unsuitable conditions for a longer period of time. In case of doubt, please return device to manufacturer for repair or maintenance. 6. Repairs should only be carried out by the manufacturer. All other repairs or modifications of the transmitter are unauthorized. 7. Any operation not described in the following instructions or outside the specifications must not be carried out. WIKA Betriebsanleitung Operating Instructions Hand-Held Hand-Held Thermometer Thermometer

Hand-Held Thermometer CTH 6200

1.2 Operation and maintenance advice

■ Operation with battery or accu If ∆ and ´bAt´ are shown in the secondary display the battery has been used up and needs to be replaced, or resp. the accu is empty and has to be recharged. The device will, however, operate correctly for a certain amount of time. If ´bAt´ is shown in the upper display the voltage is too low to operate the device; the battery or accu has been completely used up. We recommend to take out battery/accu if device is not used for a longer period of time! ■ Mains operation with power supply When using a power supply please note that operating voltage has to be 10.5 to 12 V DC. Do not apply overvoltage! Cheap 12 V-power supplies often have excessive no-load voltage. We, therefore, recommend using regulated voltage power supplies. Trouble-free operation is guaranteed by our power supply unit. Prior to connecting the power supply to the mains make sure that the operating voltage stated at the power supply is identical to the mains voltage. ■ Connecting/Changing Sensors Switch off device before changing the sensor. Connect sensor before switching on the device. In such case take the plug not at the casing but at the buckling protection at the end of the plug. When connecting the probe the plug will slide in smoothly if plug is entered correctly. To disconnect sensor plug do not pull at the cable but at the plug.

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Probes may be extremely hot or cold. Precautions must be taken to prevent personal injury or damage to objects.

WIKAWIKA Operating Betriebsanleitung Instructions Hand-Held Thermometer

Hand-Held Thermometer CTH 6200 ■ Maintenance advice GB The digital instrument and sensors are completely of solid state principle, not containing any moving parts. Dismantling of ensures invalidates warranty. If cleaning is necessary, use a cloth damp by a mild soap cleaner, avoid any solvent or caustic abrasive agent. As for measurement devices usual, the accuracy of the device should be tested in regularly time periods (approx. 1 time per year - see chapter 7).

1.3 Connections At the top of the device: are located the socket CH1 for connecting the temperature sensor of the CPT-series (see chapter 4.1) and the socket for connecting the interface converter (see chapter 5).

Connection for interface converter

CH1

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At the left side of the device: is located the mains adapter socket to connect the available power supply unit (see valid price list of CTH 6200).

WIKA Betriebsanleitung Operating Instructions Hand-Held Hand-Held Thermometer Thermometer

Hand-Held Thermometer CTH 6200

1.4 Display

1 2 6 3 7 4 5

1. Offset: indicates that zero point offset (offset) is activated. 2. Corr: indicates that correction factor is activated. 3. : indicates a low battery and other warnings. 4. Logg: Shown if logger function is selected, flashes if cyclic logger is running. 5. AL: Flashes if alarm is present. 6. Main display: Currently measured temperature. 7. Min/Max/Hold: shows if a MIN, MAX or Hold value is displayed in the secondary display. 8. Secondary display: shows MIN, MAX or Hold value acc. to selected function.

1.5 Basic operation

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When switching on the device and the logger function is not off the time of the integrated clock will shortly be displayed. If a zero point adjustment was carried out the display shows shortly "nuLL Corr". After changing the battery the clock-setting menu is activated automatically (´CLOC´). Check the clock and adjust, if necessary (see chapter 2).

WIKAWIKA Operating Betriebsanleitung Instructions Hand-Held Thermometer

Hand-Held Thermometer CTH 6200

4 1

1. On/Off key 2. Set/Menu: configuration will activated Menu, press for 2 sec 3. Tara:

When taking measurements: no function During configuration: Selection of menu-parameter

4. Max-Function: Pressing ´Max´ shows the maximum of the measured values. Pressing it again hides it. To clear the max memory press key ´Max´ for 1 seconds. 5. Min-Function: Pressing ´Min´ shows the minimum of the measured values. Pressing it again hides it. To clear the min memory press key ´Min´ for 1 seconds. 6. Hold-Function: By pressing ´Store/Quit´ the last measuring value will be held in the secondary display. Pressing it again hides it. (only when main menu logger = ´off´ is chosen).

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6. Logger-Functions: Activation with key ´Store/Quit´, if in the main menu a logger function was chosen before. (see Chapter 3).

WIKA Betriebsanleitung Operating Instructions Hand-Held Hand-Held Thermometer Thermometer

Hand-Held Thermometer CTH 6200 Main Menu

(2 sec) Read* Logg

Stored data* Call of Store-Func. data with respective time (see chapter 3)

Set Conf

Configuration Unit ** / resolution** zero point** & scale correction** Power-off / interface-off

Set AL

Alarm Min/Max alarm visual with/without sound

Set** Logg

Logger** switch from Hold to Logger function: individual values (Stor) or cyclic (CYCL)

Set Cloc

System-clock time / day & month / year

set parameter

next parameter

store & quit

* appears only if data (Store-Func.) is in the logger. ** appears only if no data is in the logger (see chapter 3).

WIKAWIKA Operating Betriebsanleitung Instructions Hand-Held Thermometer

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(ring - shift)

Hand-Held Thermometer CTH 6200

Param.

Values

Meaning

„Menu“

SEt

Set Configuration: Generic Settings

ConF

Unit rES

Lin OFFS

°C:

All temperatures values are in degrees Celsius

°F:

All temperatures values are in degrees Fahrenheit

0.1 °:

Resolution 0.1 °C

0.01°

Resolution 0.01 °C

Auto:

Resolution is selected automatically

E.751

Measuring / sensor curve according to EN 60751

USEr

In preparation

-2.50 °C ... 2.50 °C

The zero point of the measurement will be displaced by this value to

* *

resp. -4.50 °F ... 4.50 °F compensate for deviations in the probe or in the measuring device.

oFF:

SCAL -2.000 ... 2.000

Zero displacement inactive (=0.0 °C) The scale of the measuring will be changed by this factor [in %] to

compensate deviations of temperature probe or measuring device.

P.oFF

oFF:

Scale correction factor inactive ( = 0.000)

1 ... 120

Auto Power-Off delay in minutes. Device will be automatically switched off as soon as this time has elapsed if no key is pressed / no interface communication takes place.

Out

Adr.

Auto Power-off function inactive (continuous operation)

oFF:

Function of the output: No output function, lowest power consumption

SEr:

Output is serial interface

dAC:

In preparation

01, 11 .. 91

In preparation

SEt

Set Alarm: Settings of alarm function

AL.

AL.Lo AL.Hi

Alarm Sensor 1 on, with horn-sound

no. So

Alarm Sensor 1 on, without horn-sound

oFF

No alarm function

min range ... AL.Hi

Min alarm rail (not when AL.oFF)

AL.Lo ... max range

Max alarm rail (not when AL.oFF)

SEt

Set Logger: Configuration of logger function

LoGG

Func

CYCL

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oFF

CYCL

Cyclic: logger function ,cyclic logger`

Stor

Store: logger function ,individual value logger`

oFF

No logger function

0:01 ... 60:00

Cycle time of cyclic logger [minutes:seconds]

SEt

Set Clock: Setting of real time clock

CLOC

CLOC HH:MM dAtE TT.MM YEAr YYYY

Clock: setting ot time hours:minutes Date: setting of time day.month Year: setting of time year

WIKA Betriebsanleitung Operating Instructions Hand-Held Hand-Held Thermometer Thermometer

Hand-Held Thermometer CTH 6200 If keys ´Set´ and ´Store´ are pressed simultaneously for more the 2 seconds, the settings are reset of the settings ex-works.

If the logger memory contains data already, the menus/parameters marked with (*) can not be invoked! If these should be altered the logger memory has to be cleared before! (see chapter 3)

2. Configuration To change device settings, press key: ´Set/Menu´ for 2 seconds. This will call the configuration menu (main display: "SEt"). Pressing key: ´Set/Menu´ changes between the menus, pressing key: ´Tara´ jumps to the referring parameters, which can be selected with key: ´Tara´. The parameters can be changed with key: ´Min´ or ´Max´. Pressing key: ´Set/Menu´ again jumps back to the main configuration menu and saves the settings. Key: ´Store/Quit´ finishes the configuration and returns to standard measuring operation. 2.1 (Unit) Temperature unit The measured temperature can be displayed in °C or °F. 2.2 (rES) Display resolution Standard setting: ´Auto´ ,i.e. the device automatically switches over to the optimum resolution between 0.1 ° and 0.01 °. If temperatures to be measured are near the switching threshold, a fixed resolution may be better, e.g. for easy recording. In such a case please select the optimum resolution manually. 2.3 (Lin E.751) Sensor curve

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This function used the standard conversion of resistance to temperature following EN60751 (Lin E.751).

WIKAWIKA Operating Betriebsanleitung Instructions Hand-Held Thermometer

Hand-Held Thermometer CTH 6200 The sensor curve following EN60751 uses the international temperature scale ITS90 and following formulas:

Temperatures <0 °C: Rneg(T): = 100 [1 + 3,908310-3 * T - 5,77510-7 * T2 - 4,18310-12 * (T - 100) * T3] Temperatures >=0 °C: Rpos(T): = 100 (1 + 3,908310-3 * T - 5,77510-7 * T2)

2.4 (OFFs) Zero point correction / Offset A zero point correction can be carried out for the measured temperature: temperature displayed = temperature measured - offset Standard setting: ´off´ = 0.0 °, i.e. no zero point correction will be carried out. The zero point correction is mainly used to compensate for sensor deviations. Unless ´off´ is set, this value will be displayed shortly after the device is switched on; during operation it will be identified by means of the offset arrow in the display. 2.5 (Scal) Scale correction The scale of the measuring can be influenced by this setting (factor is in %). displayed temperature [°C] = measured temperature [°C] * (1 + Scal/100) or respectively

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displayed temperature [°F] = (measured temperature [°C] - 32 °F) * (1 + Scal/100) + 32 °F Standard setting: ´off´ =0.000, i.e. temperature is nor corrected. Together with the zero displacement (see above) this factor is mainly used to compensate for sensor deviations. Unless the factor is set to ´off´, the Corr arrow in the display shows an active scale correction.

WIKA Betriebsanleitung Operating Instructions Hand-Held Hand-Held Thermometer Thermometer

Hand-Held Thermometer CTH 6200

2.6 (P.oFF) Power off function If there won't be pressed any key and no interface communication takes place for the time of the power off time setting (P.off), the device will be switched off automatically to save battery power. If P.oFF = oFF then the automatic switch off is deactivated. 2.7 (Out) Serial interface The output can be used as serial interface. If none needed, we suggest to switch the output off, because battery life then is extended. 2.8 (Adr.) Interface base address In preparation for use with multiplexer. 2.9 (AL.) Alarm There are three possible settings: Alarm off (AL. oFF), on with horn sound (AL. on), on without horn sound (AL. no.So). Following conditions will display an alarm, when the function is activated (on or no.So): ■ Value is below lower (AL. Lo) or above upper alarm rail (AL.Hi). ■ Sensor error (Sens Erro) ■ Low battery (bAt) ■ Fe 7: System error (always with sound) In case of an alarm, the alarm arrow flashes, and when polling the interface the prio-flag is set in the returned interface message.

The real time clock is used for the logger function: Recorded values are also containing the point of time, when they were measured. Please check the settings when necessary. If the battery was replaced the referring menu ´CLOC´ will automatically be started.

WIKAWIKA Operating Betriebsanleitung Instructions Hand-Held Thermometer

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2.10 (CLOC) Real time clock

Hand-Held Thermometer CTH 6200

3. Operation of logger The device supports two different logger functions: "Func-Stor": each time when the key: ´Store/Quit´ is pressed a measurement will be recorded. "Func-CYCL": measurements will automatically be recorded each interval, which was set in the logger menu ´CYCL´ until the logger will be stopped or the logger memory is full. The recording is started by pressing key: ´Store/Quit´ for 2 seconds. The logger records 1 measurement result each time. For the evaluation of the data the WIKA Data logger evaluation software GSOFT (V 1.7 or higher) has to be used. The software also allows easy configuration and starting of the logger. When the logger is activated (Func Stor or Func CYCL) the hold function is no more available, the key: ´Store/Quit´ is solely used for the operation of the logger functions.

3.1 Func-Stor": Storing single measurements Each time when key: ´Store/Quit´ is pressed a measurement and its time stamp will be recorded. The recorded data can be viewed either in the display (when calling the configuration an additional menu "REAd LoGG" is displayed, see below) or by means of the interface and a PC with GSOFT-software. Max. number of measurings:

A measuring max. contains:

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■ Current measuring value at the time of recording ■ Min.-Peak, Max.-Peak since last recording ■ Time and date of the recording After each recording "St. XX" will be displayed for a short time. XX represents the number of the recording.

WIKA Betriebsanleitung Operating Instructions Hand-Held Hand-Held Thermometer Thermometer

Hand-Held Thermometer CTH 6200 If logger memory contains recordings already: When key: ´Store/Quit´ is pressed for 2 seconds, the choice for clearing the logger memory will be displayed:

clear all recordings

clear nothing (cancel menu)

clear the last recording The selection can be made by key: ´Min´ and key: ´Max´. Key: ´Store/Quit´ enters the choice. If the logger memory is full, the display will show: Viewing Recorded Measurings Within the "LoGG Stor" function the measurings can be viewed directly in the display not only by means of a computer (like at "Func CYCL"): press 2 seconds ´Set/Menu´. The first menu displayed now is "rEAd LoGG" (read logger data). After pressing key: ´Tara´ the measurement recorded last will be displayed, changing between the different values referring to the measurement also is done by pressing key: ´Tara´. Changing the measurement is done by pressing the key: ´Min´ or key: ´Max´. 3.2 Func-CYCL": Automatic recording with selectable cycle-time The Logger-Cycle-Time is setable (p.r.t. Configuration). For example "CYCL" = 60: A measuring is recorded after each 60 seconds.

A measuring contains: ■ Current measuring value at time of recording

WIKAWIKA Operating Betriebsanleitung Instructions Hand-Held Thermometer

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Max. number of measurings: 16384 Cycle time: 0:01 ... 30:00 (minutes: seconds, min 1 s, max 1 h), selectable in the configuration

Hand-Held Thermometer CTH 6200 Starting a recording: By pressing ´Store/Quit´ for 2 seconds the recording will be initiated. After that the display shows “St.XXXX” for a short time whenever a measuring is recorded. XXXX is the number of the measuring 1... 16384.

If the logger memory is full, the display will show: The recording automatically will be stopped.

Stopping the recording manually: By pressing key: ´Store/Quit´ the recording can be stopped manually. Then the following choice appears: Stop the recording

Stop no the recording

The selection can be made by key: ´Max´ and key: ´Min´. ´Store/Quit´, enters the choice. If you try to switch off the instrument in the cyclic recording operation. You will be asked once again if the recording is to be stopped. The device can only be switched off after the recording has been stopped! The Auto-Power-Off-function is deactivated during recording! Clear Recordings: When key: ´Store/Quit´ is pressed for 2 seconds, the choice for clearing the logger memory will be displayed:

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clear all recordings

clear nothing (cancel menu)

The selection can be made by key: ´Max´ and key: ´Min´ key: ´Store/Quit´ enters the choice.

WIKA Betriebsanleitung Operating Instructions Hand-Held Hand-Held Thermometer Thermometer

Hand-Held Thermometer CTH 6200

4. General information about temperature sensors ■ Heat loss caused by probe construction: Especially when measuring temperatures which deviate very much from the ambient temperature, measuring errors often occur if the heat loss caused by the probe is not considered. When measuring fluids therefore the probe should be emerged sufficiently deep and be stirred continuously. When measuring gases the probe should also emerge as deep as possible in the gas to be measured (e.g. when measuring in channel/pipes) and the gas should flow around the probe at sufficient flow. The tube length should be selected long enough, that temperature keeps low at the handle. ■ Self Heating The measuring current of the instrument is just 0.3 mA. Because of this comparably low current practically no self heating effect has to be considered, even at air with low movement the self heating is <= 0.01 °C. ■ Cooling by Evaporation When measuring air temperature the probe has to be dry. Otherwise the cold due to the evaporation causes too low measurings.

4.1 Available sensors The device is designed to be connected to all sensors of the CTH6200 series (see valid price list CTH6200).

By means of the serial interface and a suitable electrically isolated interface adapter the device can be connected to a computer for data transfer (USB-adapter on request), to visualise the data with the WIKA Datalogger evaluation software GSOFT (see valid price list CTH6200). To avoid transmission errors, there are several security checks implemented e.g. CRC.

WIKAWIKA Operating Betriebsanleitung Instructions Hand-Held Thermometer

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5. The serial interface

Hand-Held Thermometer CTH 6200

6. Fault and system messages Display

Meaning

GB Remedy

Low battery voltage, device will coninue to work for a short time

Replace battery

If mains operation: wrong voltage

Check power supply, replace it when necessary

Battery empty

Replace battery

Mains operation without battery: wrong voltage

Check power supply, replace it when necessary

Battery empty

Replace battery

Mains operation without battery: wrong voltage

Netzgerät überprüfen / austauschen

System error

Disconnect battery or power supply, wait some time, re-connect

Device defective

Return to manufacturer for repair

Sensorerror: son sensor connected

Connect sensor to socket

Sesnor / cable or device defective

Return to manufacturer for repair

Value exceeding measuring range

Is the value exceeding the measuring range specified? -> measuring value to high!

Wrong probe connected

Check probe

Sensor / cable or device defective

Return to manufacturer for repair

Value below display range

Check: is the value below the measuring range specified? -> measuring value to low!

Wrong probe connected

Check probe

Sensor / cable or device defective

Return to manufacturer for repair

Err.3

Value exceeding display range

-> Set resolution to 0.1 ° or Auto

Err.4

Value below display range

-> Set resolution to 0.1 ° or Auto

Err.7

System error

Return to manufacturer for repair

Out of range

Do not leave the specified range

No display or strange symbols, device is not responding to input

----

Err.1

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Err.2

WIKA Betriebsanleitung Operating Instructions Hand-Held Hand-Held Thermometer Thermometer

Hand-Held Thermometer CTH 6200

7. Calibration services

DKD-certificates - other certificates: If device should be certificated for its accuracy, it is the best solution to return it with the referring sensors to the manufacturer. Only the manufacturer is capable to do efficient recalibration if necessary to get results of highest accuracy! 8. Specifications Characteristics of the complete measuring chain (digital instrument and probe): Input 1 Sensor type Pt 100 (4-wire) Measuring range ex stock -50 ... +250 °C 0.2 K Total measurement 1) uncertainty 1) (On request a higher accuracy can be reached by an adjustment at a certain temperature range.) Calibration * Calibration report 3.1.B according to DIN EN 10204 Display 2 x 4 1/2-digit LCD display for actual value and additional information Resolution 0.01 K up to 200 °C; than 0.1 K Units °C, °F CTH 6200 Digital Instrument specific details: Measuring range -99.99 ... +99.99 °C or -199.9 ... +650.0 °C respectively (dependent on probe) Functions via key press Min-, Max-memory, Hold, Logger (Start/Stopp) Functions via menu Min-, Max-alarm (acoustic/visual), autom. Power-Off-Function [1 ... 120 min], Zero point / span correction, Logger settings Data logger - individual value logger: up to 99 recordings incl. time via keypress - cyclic logger: automatic recording up to 16,200 values incl. time, with cyclic time selectable from 1 ... 3600 seconds Interface (serial) RS 232 interface via interface converter (USB adapter on request) Power supply 9 V-zinc-carbon battery (incl. in scope of delivery), {alternative: 9 V rechargeable battery or mains supply} Power consumption approx. 1.25 mA Nominal temperature 25 °C Temperature drift ≤ 0.002 °C/K Permissible ambient -10 ... +50 °C temperature Air humidity 0 ... 95 % relative humidity without moisture condensation Storage temperature -25 ... +70 °C Housing impact-resistant ABS, membrane keyboard, transparent panel Weight approx. 160 g

1) *) {}

The total measurement uncertainty is stated for the whole measuring chain after adjustment and calibration. Calibration at 23 °C ± 2 °C ambient temperature. Items in curved brackets are optional extras for additional price.

WIKAWIKA Operating Betriebsanleitung Instructions Hand-Held Thermometer

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CTP 62x0 Temperature sensor specific details (Pt 100): Probes available Immersion and penetration probe Electrical connection 4-pole Mini-DIN plug with PVC cable (approx. 1.0 m) Temperature range - Immersion probe CTP 6210 -50 ... +250 °C - Penetration probe CTP 6290 -50 ... +250 °C Material wetted parts Immersion and penetration probe: stainless steel Dimensions Sensor length: 300 mm; hand grip: 135 mm Sensor diameter: D = 3 mm

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Thermometers and Temperature

CTH 6200 Operating Instructions Sept 2004