Version 1.7 (June 2017)
TSI Flowmeters Ltd.
13
Display does not reach this display of the Self-Test 
Sequence -
Possible Cause:
The Sensor part of the device and the Display part of 
the device are not in contact.
Action:
Check all cables are secure.  If still not connected – 
please contact your local representative
* This condition may indicate that water ingress to the 
electronics compartment has damaged the control 
electronics.  Please contact your local representative.
ERRATIC DISPLAY5.3.2
Possible Cause:
The battery voltage is too low. 
Action:
Charge the batteries.
READING NOT DISPLAYING
The power-on Self-test Sequence is okay, but there is 
no reading when water is owing.
5.3.3
Possible Cause:
1)  Batteries voltage is too low
2)  No earth wire to battery
3)  Unit is faulty 
Action:
1)  Charge or replace batteries
2) Replace earth wire between battery negative 
terminal and red casting
3)   Return unit to Manufacturer
RECHARGING ISSUES
The unit will not charge or there are humming noises 
while trying to recharge.
5.3.4
Possible Cause:
Faulty battery charger or batteries are over-discharged 
and cannot recover. 
Action:
Contact local representative for replacement charger 
or batteries. Generally speaking, if battery voltage falls 
below 6 volts DC, it will not recover.
5.3 TROUBLE-SHOOTING
INCOMPLETE SELF-TEST SEQUENCE
Display goes through the Self-Test Sequence until this 
display -
5.3.1
SCALE ADJUSTMENT
The Flowmaster is calibrated and the scale adjusted 
at the factory. Accurate measurements can be made 
immediately upon receipt of the unit. It is recommended 
that all measuring instruments are calibrated annually. If, 
perchance, the display does not seem to be accurate, 
then please check that the electrodes are clean. 
5.2.2
5.4 CALIBRATION OF YOUR FLOWMASTER
Every TSI ow meter is tested and calibrated prior to 
shipping. A calibration label is attached to the top lid of 
the meter (Figures 5.3 and 5.4). The calibration date and 
the date on which the meter is due its next calibration 
are written on the label for your convenience.
Fig. 5.3 Calibration label on lid of Flowmaster
Fig. 5.4 Calibration label showing calibration date and 
re-calibration date
The master meter at TSI is calibrated annually at the 
Irish National Test Centre. This ensures the readings 
obtained by the Test Equipment referred to on 
certicates issued by TSI Flowmeters Ltd are traceable 
to National and International standards
Annual calibration of the Flowmaster is recommended, 
particularly if the meter is used on a regular basis. 
Please return your meter to TSI Flowmeters Ltd for 
calibration.