Intended use ............................ 7 Qualified personnel.......................... 8 Description ............................ 9 Scope of delivery .......................... 9 Job description............................ 9 The product at a glance ........................ 10 The G 1720............................ 10 Display elements .......................... 10 Operating elements .......................... 10 Operation............................ 11 Commissioning ........................... 11 5.1.1 Explanation ............................
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Table of contents Disposal............................. 21 Technical data........................... 22 Spare parts and accessories ...................... 23 Service ............................... 24 12.1 Manufacturer............................ 24 12.2 Repairs ............................... 24 12.3 Sales subsidiaries.......................... 25 B-H86.0.0C.DB2-1.0 3 / 25...
1 | About this documentation G 1720 1 About this documentation 1.1 Foreword Read this document carefully and familiarise yourself with the operation of the product before you use it. Keep this document ready to hand and in the immediate vicinity of the product so that it is available to the personnel/user for reference at all times in case of doubt.
G 1720 About this documentation | 1 Prerequisite All mandatory prerequisites are then listed for each step. Instruction Tasks to be carried out by the personnel / user are represented as numbered instruc- tions. Adhere to the sequence of the specified instructions.
2 | Safety G 1720 2 Safety 2.1 Explanation of safety symbols DANGER This symbol warns of imminent danger which can result in death, severe bodily injury, or severe property damage in case of non-observance. CAUTION This symbol warns of potential dangers or harmful situations which can cause damage to the device or to the environment in case of non-observance.
G 1720 Safety | 2 CAUTION Erratic behaviour! On suspicion that the product can no longer be operated without danger, it must be decommissioned and prevented from recommissioning with appropriate labelling. The safety of the user can be impaired by the device if, for example, if it shows visible damage, it no longer works as specified or if it was stored for an extended period of time under unsuitable conditions.
2 | Safety G 1720 2.5 Qualified personnel For commissioning, operation and maintenance, the relevant personnel must have ad- equate knowledge of the measuring process and use of the measurements, for which purpose this document makes a valuable contribution. The instructions in this docu- ment must be understood, observed and followed.
G 1720 Description | 3 3 Description 3.1 Scope of delivery Please check to ensure the completeness of the product after opening the package. You should find the following components: – Quick reference guide – Handheld measuring device, ready for operation, including batteries –...
4 | The product at a glance G 1720 4 The product at a glance 4.1 The G 1720 LCD Display G 1720 G 1720 4.2 Display elements Display Battery indicator Evaluation of the battery status Unit display Display of units, if applicable, with unstable symbol...
G 1720 Operation | 5 5 Operation 5.1 Commissioning 5.1.1 Explanation Description The product is switched on with the On/Off button. It may be necessary to configure the product after switching on. See Configuration [} p. 11]. Prerequisite – Sufficiently full batteries are inserted in the product.
5 | Operation G 1720 Representation Call up menu Next parameter Change value Save changes Discard changes Press: Single step Hold: Rapid change Outcome of an action The Configuration menu is closed after the last parameter. NOTE If the product is switched off without saving the configuration, the last save value is re- produced on the next start-up of the product.
G 1720 Operation | 5 Backlighting L,TE Backlighting deactivated Automatic shut-off of the backlighting after a selec- 15 30 60 120 240 ted time in seconds, during which no buttons have been pressed No automatic shut-off of the backlighting Temperature unit UN,T Temperature display in °C...
5 | Operation G 1720 5. In order to save the new parameter value, press and hold the Function key for longer than 1 second. Representation Call up menu Hold Release Outcome of an action The Configuration menu is closed after the last parameter.
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G 1720 Operation | 5 – Display in water bath 36.6 °C – Display in water bath setpoint T.SL = 37.0 °C – T.OF = display zero point correction – setpoint zero point – T.OF = -0.2 °C – 0.0 °C = -0.2 °C –...
6 | Bases for measurement G 1720 6 Bases for measurement 6.1 Possible measuring errors 6.1.1 Immersion depth Liquids Immerse to a depth of at least 20 mm and then stir. Otherwise, measuring errors can occur due to the heat transmission of the sensor tube if the immersion depth is too shallow.
G 1720 Maintenance | 7 7 Maintenance 7.1 Operating and maintenance notices NOTE The product and temperature probe must be handled with care and used in accord- ance with the technical data. Do not throw or strike. NOTE If the product is stored at a temperature above 50 °C, or is not used for an extended period of time, the batteries must be removed.
7 | Maintenance G 1720 NOTE Read the following handling instructions before replacing batteries and follow them step by step. If disregarded, the product could be damaged or the protection from moisture could be diminished. Description Proceed as follows to replace the batteries.
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G 1720 Maintenance | 7 NOTE The product is delivered with a test report. This confirms that the measuring device has been adjusted and tested. NOTE Only the manufacturer can check the basic settings and make corrections if neces- sary.
8 | Error and system messages G 1720 8 Error and system messages Display Meaning Possible causes Remedy No suitable measur- Incorrect measuring Connect a suitable measur- ---- ing probe connected probe ing probe Measurement far Measuring probe or Measurement leaves the...
G 1720 Disposal | 9 9 Disposal Separation by material and recycling of device components and packaging must take place at the time of disposal. The valid legal regulations and directives applicable at the time must be observed. NOTE Fill in the return form available from the information base online at www.ghm-group.de and sent it in with the product.
10 | Technical data G 1720 10 Technical data Measuring range temperature -70.0 .. +250.0 °C (-94.0 .. +482.0 °F) Accuracy temperature -20 .. +100 °C: ±0.1 K ±1 digit otherwise: ±0.2 % of measured value ± 2 digits Response time T90 water (0.4 m/s) approx.
G 1720 Spare parts and accessories | 11 11 Spare parts and accessories A selection of spare parts and accessories for this product is listed below. Article Number Name Description 610049 Mignon battery Mignon AA spare battery 611373 ST-G1000 Device protection bag with 1 round cut-out A complete list of all accessories and spare parts is available in our product catalogue or on our home page.
12 Service 12.1 Manufacturer If you have any questions, please do not hesitate to contact us: Contact GHM Messtechnik GmbH GHM GROUP - Greisinger Hans-Sachs-Str. 26 93128 Regenstauf | GERMANY Phone: +49 94029383-52 info@greisinger.de | www.greisinger.de WEEE reg. no. DE 93889386 12.2 Repairs...