User's Guide

PE_QW1_V04_US
13
8 - Low battery
(less than 12 months lifetime left)
XXnX
0 - Normal operation
4 - Hardware failure detected
8 - Hardware failure detected
XXXn
0 - Normal operation
1 - No signal; the flow sensor is not filled with water
2 - Reverse flow
4 - Flow rate is greater than 1,25∙Maximum flow
(indicated q =1,25∙Maximum flow)
8 - Freeze alert
Active info codes are added, if it is detected more than one error. Then the summary indicated info code
will be as follows:
3 - corresponds errors 2 + 1
5 - corresponds errors 4 + 1
7 - corresponds errors 4 + 2 + 1
9 - corresponds errors 8 + 1
A - corresponds errors 8 + 2
B - corresponds errors 8 + 2 + 1
C - corresponds errors 8 + 4
D - corresponds errors 8 + 4 + 1
E - corresponds errors 8 + 4 + 2
F - corresponds errors 8 + 4 + 2 +1
Verification (test) mode control
In verification (test) mode it is possible to achieve precise results within short measuring time.
In the test mode, the meter:
- indicates the increased resolution of flow values;
- forms energy or volume pulses through the optical interface;
Volume pulse values (via optical interface) in verification mode „TEST“ are presented in Table 6.2
Table 6.2
Permanent flow rate
Volume
Pulse value, gal/imp
7,0 0,026
11,0 0,052
17,6 1,056
Using an optical head and PC with W1 TOOL software the meter verification mode (TEST) can be
activated.
Optical head should be connected to the computer USB interface. After placing optical head on the
meter with the special holder and opening the program start up window, PC port number (to wich optical head is
connected) is entered in the field „Com Port“. Click „Wake up meter“ button, then click the „Enter test mode“
button. When the meter TEST mode is activated, meter readings are displayed with resolution of 1 ml. Optical
pulse output of mete ris used or volume indications can be read directly from LCD.
Ending of verification mode
Using an optical head and PC with W1 TOOL software the meter verification mode (TEST) is returned
to the operating mode. After opening the program startup window, click „Wake up meter“, then click „Enter user
mode“. The meter returns to the normal mode. The meter returns to its normal mode automatically, 24 hours
after activation of TEST mode.