Front view of an optek 156 single channel optical converter

156 Converter

Single Channel Optical Converter

The single channel 156 converter is designed for the control of an optek AF56 / AS56 optical sensor or probe for process monitoring. Range settings and configurable alarms add flexibility in the process control. Analogue signals can be passed e.g., to PLC.

Used For

For one NIR Absorption sensor (Turbidity)
- Turbidity (EN ISO 27027)
- CU (concentration units)

The 156 converter provides continuous inline, real-time measurement and control of concentrations, color changes or turbidity in a variety of industrial processes. With four fixed measuring ranges and one variable measuring range, the converter can be set to match your specific process parameters. The 3-digit LED indicator displays the percentage of the selected measuring range. Two independent set points and one mA output are provided for alarms and real-time process monitoring when wired to the plant's process control system. An additional failsafe relay output is built in for remote sensing of lamp or power failure. Combined with a precision sensor, the converters are cost-effective measuring systems that provide reliable measurements throughout your process.

Features

Benefits

Single channel photometric measurement converter

Cost effective converter for a single photometric sensor

Two alarm settings

Individual setting of alarm status

Compact dimensions

Easy to integrate into installations

156
Housing	19"-version for rack-mounting 3 U / 21 HP dimensions: W 106.3 mm (4.19 in) H 128.4 mm (5.06 in) D 208 mm (8.19 in) material: aluminum / diverse plastics protection: front IP40 / rear IP20 (mains supply secured against accidental touching)
Display	1 digital read-out, LED display, 3 digits, height: 7 mm
Operation	dip switches, potentiometer, coding switch
LED	1 LED (red):power on 1 LED (green):zero 5 LED (yellow):measuring ranges 2 LED (red):alarms I and II 1 LED (red):lamp or system failure
Sensor-inputs	1 for optek photometric sensor AF56 or AS56
Sensor lamp-outputs	1 lamp supply for optek photometric sensor 4.8 -7.0V DC
mA-outputs	1 x 4 - 20 mA (functionally gavanically isolated) accuracy:< 1 % load:< 500 Ohm
Relay-outputs	2 independently adjustable SPDT contacts 0 - 250 V AC, 0 - 300 V DC, 0 - 8 A (refer to load limit curve relay outputs in the manual) for alarm I and II
Failsafe-output	1 SPDT contact to alarm in case of lamp or system failure (active) 0 - 250 V AC, 0 - 300 V DC, 0 - 8 A (refer to load limit curve relay outputs in the manual)
Cable lengths (sensor)	2, 3, 5, 10, 15, 20, 30 ... 100 m (7, 10, 16, 33, 49, 66, 98 ... 328 ft.) sensor AS56: max 50 m
Power supply	115 / 230 V AC, selectable (93.5 - 132 / 187 - 264 V AC, 47 - 64 Hz) or 24 V AC / DC (AC: 20.4 - 26.4 V AC, 47 - 64 Hz; DC: 20.4 - 28.8 V DC) power consumption:< 30 VA
Ambient conditions	temperature during operation (no direct sunlight): converter:0 - 50 °C (32 - 122 °F) with optional stainless steel housing S19-42 (IP65):0 - 40 °C (32 - 104 °F) with optional plastic housing B19-42 (IP66):0 - 35 °C (32 - 95 °F) with optional plastic housing B19-21 (IP66):0 - 35 °C (32 - 95 °F) temperature during transport (no direct sunlight): -20 - 70 °C ( -4 - 158 °F)
Data given are subject to changes without prior notice.