Hach-Lange WPC-22 - Manual (Page 3)

Specifications
Specifications are subject to change without notice.
Specification Details
Dimensions (W x D x H) 248 x 114 x 302 mm (9.75 x 4.50 x 11.88 in.) with
sensor and mounting brackets
Enclosure NEMA 4X
Light source 780 nm, 5 mW class 3B laser diode; 30,000 hours
lifetime
Detector Photodiode
Display LCD, 4-line x 16-character
Port sizes Two compression fittings for 0.25-in. OD inlet and
outlet tubing
Wetted materials Fused silica, Viton (fluorocarbon) and Kynar (PVDF)
Flow cell WPC-21: 600 x 600 µm fused silica with AR
coatings
WPC-22: 800 x 800 µm fused silica with AR
coatings
Weight 2.25 kg (5 lb)
Installation category II
Protection class I
Pollution degree 2
Operating environment WPC-21: 5 to 40 °C (41 to 104 °F), 5 to 90% relative
humidity, non-condensing
WPC-22: 5 to 45 °C (41 to 113 °F), 5 to 90% relative
humidity, non-condensing
Storage environment –20 to 60 °C (–4 to 140 °F), 98% relative humidity,
non-condensing (maximum)
Altitude 2000 m (6562 ft) maximum
Power requirements 230 VAC ±15% , 20 VA, 50/60 Hz
Specification Details
Detection method Light blocking
Calibration WPC-21: Factory calibrated at flow rate of
50 mL/minute, NIST traceable, eight particle sizes
WPC-22: Factory calibrated at flow rate of
100 mL/minute, NIST traceable, eight particle sizes
Particle sizes WPC-21: 1.3, 2, 3, 5, 7, 10, 15 and 25 µm
WPC-22: 2, 5, 7, 10, 15, 25, 50 and 100 µm
Coincidence fields WPC-21: 10% loss at 25,000 particles/mL
WPC-22: 10% loss at 15,000 particles/mL
Number of channels Two channels; Channel 1: smallest particle size,
Channel 2: one of the other seven channel sizes
(fixed) or all seven particle sizes (scrolling)
Measurement units Number of particles per mL
Sensor resolution Less than 10% at 10 µm as described in ASTM-
F658-87
Sensor counting efficiency Meets JIS 9925 B-1997 standards
Sample pressure 8.3 bar (120 psi) maximum
Sample flow rate WPC-21: 45–55 mL/minute
WPC-22: 90–110 mL/minute
Sample temperature 0 to 50 °C (32 to 122 °F), non-freezing
Digital input One; 0–10 VDC, ± 24 VDC < 10 mA
Digital outputs Two; open collector (100 mA, 24 VDC maximum)
Analog inputs Two; 0–10 VDC
Analog outputs 2 channels: 4–20 mA
Communications RS485 (protocol: MODBUS) or RS232, 19 AWG
twisted shielded pair wire
English 3