Dwyer HM28 User Manual
Page 13
13
7
Accessories
Standard 1 9 V block battery
1 operating instructions
Option
Plug-in power supply unit
115V, 60Hz
Leather case with carrying strap
Service set
Hand pump with variobellows 5bar
Handpump 20 bar
SCS test certificate
Adapter RS232 9M-25F
Adapter NPT1/8"
Communication SW package
comprising:
-
RS232-IF cable (9 pole fem.)
-
Communication-software for
MS Windows
-
Measurement places
management software for
MS Windows
6
Warning messages and faults
Fault/indication
Possible cause
Remedy
ERROR
OUT OF RANGE
CHANGE BATTERY
No change in
measurement
Does not switch on
Instrument
inaccurate
10% exceeding or under-
running of measuring range
Battery voltage too low
Over pressure applied to
pressuresensor
No power supply
Inaccurate recalibration
Not zeroed
Natural aging of the pressure
sensor
Apply permissible measuring
pressure
Insert new battery
Dispatch instrument for repair
Fit new battery as required
Battery possibly not correctly inserted
Plug in power supply unit correctly
Repeat recalibration
Vent and actuate zero
Carry out recalibration