GREISINGER GMH 3221, GMH 3231, GMH 3211, GMH 3251 Operating Manual

H76.0.13.6C-03

GHM GROUP - Greisinger

GHM Messtechnik GmbH | Hans-Sachs-Str. 26 | 93128 Regenstauf | GERMANY
Tel.: [phone] | [e-mail] | www.greisinger.de

Operating manual

Quick-Response

Double / Difference Thermometer

as of version 4.0

GMH 3221



Please carefully read these instructions
before use!

WEEE-Reg.-Nr. DE 93889386



Please consider the safety instructions!



Please keep for future reference!

H76.0.13.6C-03 Operating Manual GMH 3221 page 2 of 12

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Index

1 GENERAL NOTE ............................................................................................................... 2

2 SAFETY ................................................................................................................................ 3

2.1 INTENDED USE .................................................................................................................. 3

2.2 SAFETY SIGNS AND SYMBOLS ............................................................................................ 3

2.3 SAFETY GUIDELINES .......................................................................................................... 4

3 PRODUCT SPECIFICATION ........................................................................................... 5

3.1 SCOPE OF DELIVERY .......................................................................................................... 5

3.2 OPERATION AND MAINTENANCE ADVICE ........................................................................... 5

4 HANDLING ......................................................................................................................... 5

4.1 DISPLAY ............................................................................................................................ 5

4.2 BASIC OPERATION ............................................................................................................. 6

4.3 CONNECTIONS ................................................................................................................... 6

4.4 POP-UP CLIP ...................................................................................................................... 7

5 START OPERATION ......................................................................................................... 7

6 CONFIGURATION............................................................................................................. 8

7 REMARKS TO SPECIAL FEATURES ........................................................................... 8

7.1 TARE FUNCTION ................................................................................................................ 8

7.2 POWER OFF TIME ............................................................................................................... 8

8 ADJUSTMENT .................................................................................................................... 9

8.1 ZERO DISPLACEMENT SENSOR 1 ('OFS.1') OR SENSOR 2 ('OFS.2') ................................... 9

8.2 SCALE CORRECTION SENSOR 1 ('SCL.1') OR SENSOR 2 ('SCL.2') ...................................... 9

8.3 CALIBRATION SERVICES .................................................................................................... 9

9 FAULT AND SYSTEM MESSAGES .............................................................................. 10

10 RESHIPMENT AND DISPOSAL ................................................................................. 11

10.1 RESHIPMENT ................................................................................................................. 11

10.2 DISPOSAL ..................................................................................................................... 11

10.3 DECOMMISSIONING ...................................................................................................... 11

11 SPECIFICATION ........................................................................................................... 12

1 General Note

Read this document carefully and get used to the operation of the device before you
use it. Keep this document within easy reach near the device for consulting in case
of doubt.

H76.0.13.6C-03 Operating Manual GMH 3221 page 3 of 12

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2 Safety

2.1 Intended Use

This device is designed for temperature measurement.
You can plug in up to 2 thermocouple sensors with Miniature-DIN-plug.
If you use two sensors, you can measure two different temperatures as well as the
difference between them.
The device features a lot of useful features as for example min-/max-alarm, hold,
correction factor for surface measurement, interface etc.

Personnel which starts up, operates and maintains the device has to have sufficient
knowledge of the measuring procedure and the meaning of the resulting measured
values, this manual delivers a valuable help for this. The instructions of the manual
have to be understood, regarded and followed.

To be sure that there´s no risk arising due to misinterpretation of measured values,
the operator must have further knowledge in case of doubt - the user is liable for any
harm/damage resulting from misinterpretation due to insufficient knowledge.

The manufacturer will assume no liability or warranty in case of usage for other
purpose than the intended one, ignoring this manual, operating by unqualified staff as
well as unauthorized modifications to the device.

The safety requirements (see below) have to be observed.
The device must be used only according to its intended purpose and under suitable

conditions.
Use the device carefully and according to its technical data

(do not throw it, strike it, …). Protect the device from dirt.

2.2 Safety signs and symbols

Warnings are labelled in this document with the followings signs:

Caution! This symbol warns of imminent danger, death, serious
injuries and significant damage to property at non-observance.

Attention! This symbol warns of possible dangers or dangerous
situations which can provoke damage to the device or environment at
non-observance.

Note! This symbol point out processes which can indirectly influence
operation, possibly cause incorrect measurement or provoke
unforeseen reactions at non-observance.

H76.0.13.6C-03 Operating Manual GMH 3221 page 4 of 12

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2.3 Safety guidelines

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
chapter 11 Specification.

2. 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 re­starting.
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
time. In case of doubt, please return device to manufacturer for repair
or maintenance.

3. Do not use these products as safety or emergency stop devices or in

any other application where failure of the product could result in
personal injury or material damage.
Failure to comply with these instructions could result in death or serious
injury and material damage.

4. This device must not be used at potentially explosive areas! The usage

of this device at potentially explosive areas increases danger of
deflagration, explosion or fire due to sparking.

5. This device is not constructed for use in medical applications.

6. Temperature sensor:

There is a risk of stitch injury by using insertion probs. When measuring
high temperatures there is a risk of burn, also due to residual heat of
the sensor tube.

7. Consider when measuring in food:

The device housing is not construed for the permanent contact with
food.
Keep in mind to use temperature-probes witch are suitable for the use
in food only.