11
Specifications
Alarm relays
General Information
Four form C relays, rated 28Vrms, 5A maximum. When user
assigned alarm values are set, the alarm will trip within ± 1%
of full scale error.
Downhook ultrasonic sensor 40 kHz
Accuracy 0.003 m (±0.01 ft)
Maximum range 3.35 m (11 ft) with a 3.05 m (10 ft) span
Deadband 38 cm (15 in.) maximum, self-minimizing
Material PVC housing with Buna-N acoustic window.
Cable 4 conductor with integral stainless steel support cable
Submerged depth sensor
Material 316 stainless steel body with titanium diaphragm
Cable Polyurethane sensor cable with air vent.
Cable length 7.6 m (25 ft) standard
Sensor dimensions
2.54 x 17.2 cm (1 x 6.75 in.) Probe frontal area: 0.875 in.
squared
Temperature error 2.5 psi; 0.004 to 5.75 ft ± 0.006 ft per degrees F
Maximum allowable level 6x over pressure
Operating temperature range 0 to 71 °C (32 to 160 °F)
Compensated temperature range 0 to 36 °C (32 to 96 °F)
Air intake Atmospheric pressure reference is desiccant protected.
Submerged area/velocity sensor
Depth measurement
Method Pressure transducer with stainless steel diaphragm.
Range -1.52 to 6.10 m/s (-5 to 20 ft/s)
Maximum allowable depth 3x over pressure
Temperature range
Operating temperature range: 0 to 70 ºC (32 to 158 ºF)
Level compensated temperature range: 0 to 70 ºC (32 to 158
ºF)
Note: For temperatures above 40 ºC (104 ºF) add 0.3 cm
/degree C (0.03 in / degree F)
Velocity induced depth error Compensated based on pipe geometry and flow velocity
Velocity measurement
Method Doppler ultrasonic
Transducer type Twin 1 MHz piezoelectric crystals
Recommended range -1.52 to 6.10 m/s (-5 to 20 fps)
Depth for velocity 2 cm (0.8 in.) minimum, typical
General
Material Noryl
®
plastic outer shell with epoxy potting
Power consumption Less than or equal to 1.2W at 12 VDC
Operating temperature 0 to 70°C (32 to 158° F)
Air intake Atmospheric pressure reference is desiccant protected.
Cable
Urethane cable with air vent.
Length: 9, 15, 23, and 30.5 m (30, 50, 75, and 100 ft)
Diameter: 0.91 cm (0.36 in.)
Dimensions 2.3 x 3.8 x 13.5 cm (0.9 x 1.5 x 5.31 in.)
Goodnal STP ST041 Pre Treatment (Sigma 900 MAX All Weather Refrigerated Sampler) Vendor Manual
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