LTH Electronics HPT63, Руководство по эксплуатации

Страница: 10 / 68

1 Introduction
2
Current output
( optional 1 or 2 outputs ) Each selectable 0-20 mA or 4-20 mA into 1500 Ohms max.,
fully isolated to 2kV. Expandable up to 5% of any operating
range (pH, mV,
°
C) and offset anywhere in that range.
Operator adjustment ( Current ) ±
1 mA zero and
±
1 mA span for remote monitor calibration
Set points and control relays
( Advanced model only )
Fully configurable set points (pH, mV,
°
C) with volt free contacts
for both relays. Rated at 5A 30V DC / 5A 250VAC (non-
inductive). Red LEDs indicate relay energised.
Operating modes
( Control, All relays ) On/Off, Time Proportioning, Pulse Proportioning, Band and
Clean modes selectable for each relay.
Adjustable delay timers up to 10:00 mm:ss and hysteresis in the
On/Off mode.
Adjustable dose alarm timer up to 15:00 mm:ss in all modes.
Adjustable cycle time and proportional band in the proportional
modes.
Adjustable duration, recovery and interval periods in the clean
mode.
Operating modes The relay can be set to energise on any of the following
instrument conditions:-
Sensor alarm, Dose alarm, Calibration, Off line, Any error
Switches Four tactile feedback push buttons
EMC : Immunity BS EN 50082-2 1995
EMC : Emissions BS EN 50081-1 1992
Safety Designed and manufactured in accordance with BS EN 61010-1
1993
Power Supply 15 to 30V AC or DC at 200 mA
Head Mount Housing Conductive ABS blue plastic, rated IP66
Weight 600g (instrument only)
Dimensions 110mm high x 116mm wide x 145mm deep,
excluding connectors