6712SR Refrigerated Sampler
Section 1 Introduction
1-9
Sampler Power
Requirements:
Nominal: 12 volts DC supplied by the refrigerator
Operational: 11 to 13 Volts DC
Absolute Maximum: 14.4 Volts DC
Power Pac k Requ iremen ts:
Use only Teledyne Isco-made
power packs certified by UL. (P/N
60-1684-088)
120VAC ±12VAC, 60 Hz., 1.0 Amp.
Note: This is the only version certified by UL. The line cord (mains
connect cable) is the “Disconnect Device.”
Power Consumptiona
6712 Controller in Standby 10 mA
Average Current of Accessories
Controller Display Backlight 228 mA
701 pH Moduleb11 mA
710 Ultrasonic Moduleb11 mA
720 Submerged Probe Moduleb11 mA
730 Bubbler Moduleb
— at 2 ft of liquid level 24 mA
— at 10 ft of liquid level 31 mA
750 Area Velocity Moduleb12 mA
780 4-20 mA Moduleb10 mA
YSI 600 with pH, DO, Conductivity, and Temperatureb11 mA
Programmable Analog 4-20 mA Output Optionc124 mA
CDMA cellular telephone modem
— standby current 35 mA
— current while communicating 150 mA
GSM cellular telephone modem
— standby current 62 mA
— current while communicating 230 mA
a. Current ratings when input power is 12.5 VDC and ambient temperature is 77 °F (25 °C)
b. Average current when programmed to take readings at 15 minute intervals.
c. Rating for three outputs.
Sampler Only
Operating Current: Approximately 30 mA based on 200 ml sample every hour, 10 ft (3 m) suction
line, and 5 ft (1.5 m) suction head.
Teledyne Isco External Battery Capacity:Number of Complete Standard Sampling Routines
Nickel-Cadmium Battery Lead-Acid Battery
Sampler Only: 6 9
Sampler with pH Module: 6 9
Sampler with Ultrasonic Module: 6 9
Sampler with Submerged Probe Module: 6 9
Sampler with Bubbler Module (1-2 ft head): 3 5
Sampler with Area Velocity Module: 4 6
Sampler with 4-20 mA Module: 6 9
A Standard Sampling Routine is a 200 ml sample taken every hour in 24 bottle mode, with a 10 foot (3 m) vinyl suc-
tion line at 5 feet (1.5 m) of head. The module is set to take a reading every 15 minutes.
Flow Meter
Signal Requirement: 5 to 15 volt DC pulse or isolated contact closure of at least 25 millisecond dura-
tion. (4 - 20 mA or pulse duration signal may be converted with optional interface
unit.)
Table 1-3 Technical Specifications for the 6712SR Refrigerated Sampler (Continued)