Appendix
BPD17 pH / Redox Monitor
Operating Guide
- 67 -
Setpoint Status
M51 Setpoint 1 Dose Alarm
The Dose alarm for setpoint 1 is active.
M52 Setpoint 2 Dose Alarm
The Dose alarm for setpoint 2 is active.
Current Output Errors
E61 Output Hardware
The current output circuit has detected an error in the current output loop; this is
most commonly due to either a broken loop or too large a load resistor.
E62 Sensor < OP Zero
The sensor input level is below that set for the current output zero.
E63 Sensor > OP Span
The sensor input level is greater than that set for the current output span.
E64 Sensor > OP Zero
The sensor input level is greater than that set for the current output zero.
E65 Sensor < OP Span
The sensor input level is below that set for the current output span.
Service Messages
M80 Service Due
The Planned Service interval for this unit has expired. Please contact LTH
Electronics at the details below:
LTH Electronics ltd
Chaul End Lane
Luton
Beds
LU4 8EZ
Tel. 0044 (0) 1582 593693
Fax 0044 (0) 1582 598036
Email sales@lth.co.uk
NB. LTH overseas users should contact their LTH distributor – See www.lth.co.uk for
details.
M81 Calibration Due
The time since the last calibration was performed has exceeded the time set in the
calibration menu.
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