Instruction manual

3700R/3740 Refrigerated Sampler
Section 1 Introduction
1-9
1.7.4 Liquid Level Actuator The Liquid Level Actuator is used to provide level-sensitive
control of the sampler. The actuator can be used as a simplified
alternative to a flow meter.
1.8 Technical
Specifications,
Controls, and
Connectors
The technical specifications, controls, and connectors of the
3700R/3740 are listed in Table1-1. Refer to Figure 2-6 for a
picture of the controls and connectors.
Table 1-1 3700R Technical Specifications, Controls, and Connectors
Physical Specifications
Physical Size Height: 45.75 inches (116 cm).
Width: 24.25 inches (62cm).
Depth: 25 inches (64cm).
Dry weight 145 lb (65.8 kg).
Operational Temperature Range 32°F to 120°F (0°C to 49°C).
Control Box only
(does not include refrigerator)
Self Certified NEMA 4X and 6 ratings (Submersible, watertight, dust-tight,
and corrosion resistant).
Temperature set point accuracy ± 1.8°F (1°C) at 39°F (4°C).
Pull-down time from 75°F (24°C) to
39°F (4°C)
30 minutes, typical.
Recovery time, door open 1 minute with
unit operating at 39°F (4°C), 75°F
(24°C) ambient
10 minutes, typical.
Power Specifications
Sampler Controller Power
Requirement
12 VDC AC power converter.
Sampler standby current 10 mA, maximum.
Voltage 120 V, 60 Hz (240 Volt, 50/60 Hz available).
Current: Running
Starting
3.3 amp, typical 120 volts. (1.65 amp, typical 240 volts 50/60 HZ).
12 amp, typical 120 volts. (6 amp, typical 240 volts).
Controller Internal 3V Lithium
Battery Capacity
5 years, minimum (maintains internal logic and program settings).
Pump and Tubing Specifications
Suction Tubing (intake) 3 to 99 foot lengths of:
1
/4-inch ID vinyl
3
/8-inch ID vinyl
3
/8-inch ID Teflon
®
lined
Suction Lift 26 feet (7.9 m), maximum.
Pumping Rate
(at 3 feet of head)
1
/4-inch ID suction tubing: 3000 m l/minute.
3
/8-inch ID suction tubing: 3500 m l/minute.
Line Transport Velocity
(at 3 feet of head)
1
/4-inch ID suction tubing: 5.1 f t/sec.
3
/8-inch ID suction tubing: 2.9 ft/sec.