TRUMETER 7922 Preset counter with 2 relay outputs

208,24  plus VAT.

Stock variants

5 Stück auf Lager (weitere als Nachlieferung)

SKU: 101320 Category: MPN: 7922EAN: 4016138687859Manufacturer: TRUMETER TechnologiesCountry of origin: MYCustoms tariff number: 90291000


TRUMETER 7922 Preset counter with 2 relay outputs

This versatile counter with prescaler can be configured for square or unidirectional inputs, single or double preset with batch preset. Resetting can be automatic, manual or electronic with a sink (NPN) or source (PNP) input. The display is designed as a backlit Supertwist LCD with high readability so that it can be read from any viewing angle. The count value is shown in the main display, the preset value (or the batch preset value) in the secondary display.

Programming, zeroing and preselection can be carried out from the front panel. When powered from the mains, there is a 12 V DC output for operating a sensor. The P1 or P2 preselection value (or batch preselection) can be set on the secondary display using the buttons below the individual digits. The red reset button resets the setting value in the display to 0 or P1 (depending on programming).


  • Supply voltage 85-265 V AC or 10-26 V DC
  • Auxiliary output 12 V DC
  • Preset values 1-999999
  • adjustable to max. 3 decimal places
  • Scaling factor Multiplication 0.00001-9.99999, division 1-99999
  • Counting inputs 10-30 V DC, NPN, PNP
  • Counting frequency max. 10 Khz
  • Manual, external or automatic reset
  • 2 output relays 5 A as normally closed or normally open contact
  • EEPROM data memory
  • Backlight
  • Dimensions (WxHxD): 48 x 48 x 93 mm
  • CE, UL and cUL tested

Data sheet

Operating instructions


7922 and 7932 use an EEPROM to save the programming and counter values. This is done by monitoring the internal power supply of the counter.
If the external supply voltage is switched off, the internal voltage drops accordingly and this is registered by a special circuit and the safety mechanisms are activated so that all relevant data is saved in the non-erasable memory. In addition, a so-called "checksum" is generated, which is also stored in the memory.
If the external voltage is switched on again, the processor reads the data from the memory, generates a checksum and compares it with the stored checksum. If the new checksum is different to the previously stored checksum, the processor interprets this as an error and assumes that there is a data error. This results in the message "ERR CH", which signals a data error.
This error can be caused by a defect in the processor, in the EEPROM or by external voltage peaks. If the error is caused by external voltage peaks, this can be avoided by using suitable filters. To eliminate this error, a "Power Up Reset" is required.

  1. Switch off the power supply.
  2. Press and hold the PROG button and Digit 5 button at the same time.
  3. Switch on the power supply again with the buttons pressed. Keep the buttons pressed for approx. 15 seconds until 7922/7932 appears on the display.
  4. The EEPROM memory is now reset to the default values and the counter must be reprogrammed.

Additional information

Supply voltage

230 V AC

Switch output