Maintenance; Maintenance - Clean The Unit; Maintenance - Replace The Batteries; Calibration - GE Druck DPI 880 User Manual

Maintenance

This section gives procedures to maintain the unit in a
good condition. Return the instrument to the supplier for
all repairs.
Maintenance – Clean the unit
Clean the case with a moist, lint-free cloth and a weak
detergent. Do not use solvents or abrasive materials.
Maintenance – Replace the batteries
To replace the batteries, refer to B1. Then re-attach the
cover.
Make sure that the time and date are correct. The
calibration facility uses the date to give service and
calibration messages.
All the other configuration options stay in memory.

Calibration

Note: GE can provide a calibration service that is traceable
to international standards.
We recommend that you return the instrument to the
manufacturer or an approved service agent for
calibration.
If you use an alternative calibration facility, make sure that
it uses these standards.

Calibration - Before you start

To do an accurate calibration, you must have:
• the calibration equipment specified in Table 8.
• a stable temperature environment: 70 ± 2°F (21 ± 1°C)
Table 8: (Part of table) Calibration equipment
Function Calibration equipment
(ppm = parts per million)
mA OR mA calibrator.
mA (Dual ... )
Accuracy - mA input/output: Table 10/11
Accuracy - mA (Dual Function): Table 10
mV OR mV calibrator.
TC (mV) Accuracy - mV input/output: Table 12/14
Accuracy - TC (mV): Table 19
Volts OR Volts calibrator.
Volts (Dual ... ) Accuracy - Volts input/output: Table 13/ 15.
Accuracy - Volts (Dual Function): Table 13
Hz 1) Frequency meter
Total error: 7 ppm or better
Resolution: 8 digits (minimum)
2) Signal generator
IDOS UMM only. Refer to the user manual for the IDOS
UMM.
CJ - Standard RTD probe
Accuracy: 50 mK for 23 to 82.4°F (-5 to 28°C)
- Digital thermometer
Accuracy: 10 mK
K405 Issue 1
Function
RTD Ohms
B1
RTD Ohms
*
Before you start the calibration, make sure that the time
and date on the instrument are correct (Table 1).
Selection sequence:
Options
IDOS
CJ
mA (Dual ... )
Volts (Dual ... ) To calibrate the Volts (Dual Function) input.
When you select a channel/function, the display shows
the applicable instructions to complete the calibration.
When the calibration is complete, select Calibration Due
and set the new calibration date for the instrument.
Table 8: (Part of table) Calibration equipment
Calibration equipment
(ppm = parts per million)
- Standard 0Ω resistor
- *Standard resistor (Ω): 100, 200, 300
Tolerance: 50 ppm + 0.6 ppm/°C + 5 ppm/year
- *Standard resistor (Ω): 400, 1k, 2k, 4k
Tolerance: 10 ppm + 0.6 ppm/°C + 5 ppm/year
An ohmmeter or an RTD measurement system
with the specified excitation currents (Table 18).
Or an equivalent resistance simulator
Task selection menu
Display: Enter
1 2
Calibration PIN
+
Factory PIN = 4321
Select Function
5a 5b
(If applicable)
(Table 9)
Table 9: Calibration options
Description
... To calibrate the specified input/output:
...
... ... = mA, mV, Volts, Hz, RTD (Ohms), TC (mV)
UMM only. To calibrate the specified IDOS UMM.
Refer to the user manual for the IDOS UMM.
To calibrate the cold junction channel.
To calibrate the mA (Dual Function) input.
Calibration Due: To set the date of the next
calibration for the instrument.
After the specified calibration date, there is a
warning message. There is a selection box to stop
the warning.
To change the calibration PIN (Personal
Identification Number).
Set Up (Table 1) Calibration
Menu:
3 4
Select Channel
(Table 9)
[EN] English -
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