Hach Accu4, User Manual

Page: 3 / 52

Table of contents
Specifications on page 3 Operation on page 18
General information on page 4 Maintenance on page 23
Installation on page 7 Troubleshooting on page 24
User interface and navigation
on page 17
Replacement parts and accessories
on page 27
Startup on page 18
Specifications
Specifications are subject to change without notice.
Model 8320 turbidity sensor
Specification Details
Operational:
Flow rate 0.19 to 26.5 LPM (0.05 to 7 GPM)
Ambient conditions 0 to 60 °C (32 to 140 °F)
Sample temperature
range 0 to 60 °C (32 to 140 °F)
Pressure range 0–3.4 bar at 20 °C (0–50 psig at 68 °F)
Pressure drop 0.0001 bar at 0.36 LPM (0.0017 psig at 0.1 GPM)
Residence time 3.8 LPM (9.5 seconds at 1 GPM)
Air venting Integral bubble trap for 0.19 to 1.9 LPM (0.05 to
0.5 GPM) flows.
Installation of an external bubble trap and a restrictor
valve on the sensor outlet is recommended for flows
above 1.9 LPM (0.5 GPM) with air in the sample.
Refer to
Use an external bubble trap on page 27.
Mechanical:
Light sources Two near-infrared (880 nm wavelength) LEDs
Specification Details
Power requirements 5 V supplied by the controller to the light sources
and detectors
Process connections ½–in. NPT female standard; adaptable to
3
/
8
–in. or
¼–in. NPT, barb or tube fittings
Wetted materials PVC, polycarbonate, polystyrene, PPO, nitrile and
Buna-N
Enclosure Molded fiber-glass-reinforced polyester (flame
retardant) with four brackets for surface mounting
Dimensions (W x D x H) 285 x 172 x 400 mm (11.21 x 6.79 x 15.75 in.)
Net weight 4.5 kg (10 lb) approximately
Certifications 15 year environmental friendly use period
Model T53 controller
Specification Details
Operational:
Display Graphic dot matrix LCD, 128 x 64 pixels with LED
backlighting; 13 mm (½–in.) main character height;
3 mm (
1
/
8
–in.) auxiliary information character height;
menu screens contain up to six lines of text
Ambient conditions Operation: –20 to 60 °C (–4 to 140 °F); 0–95% relative
humidity, non-condensing
Storage: –30 to 70 °C (–22 to 158 °F); 0–95% relative
humidity, non-condensing
Pollution degree 2
Installation category II
Protection class I
Altitude 2000 m (6561 ft) maximum
English 3