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Water Level Sensors

KPSI 500 Series SDI-12 Submersible Pressure & Temperature Transducer Specifications:

 

KPSI SERIES 500 SPECIFICATIONS

Parameter

500

501
Units
Comments

LEVEL RANGES

Full Scale Level Ranges (1)

10 thru 230
(3 thru 70)

10 thru 50
(3 thru 15)

ft H2O
(m H2O)

vented gage reference
Proof Pressure
1.5
x FS
6
Burst Pressure
2.0
x FS
67

STATIC PERFORMANCE

MEASUREMENT ACCURACY
Level
±0.05
±0.10
N/A

%FS TEB (2)
%FS TEB (2)

for level ranges > 10 ft (3 m) H2O
for level ranges <= 10 ft (3 m) H2O
N/A
±0.01
±0.1

ft H2O
% of reading

when reading <= 10 ft (3m) H2O
when reading > 10 ft (3m) H2O
Temperature

±0.5

ºC

6
Excitation

±0.5

VDC

8 to 28 volts
MEASUREMENT RESOLUTION
Level ±0.0001 % FS  
Temperature ±0.001 ºC  
Excitation ±0.1 VDC  

ENVIRONMENTAL

Wetted Materials

316 SS or Titanium; Delrin®,
polyurethane or Viton®

2 Delrin® and  Viton® are registered trademarks of DuPont.
Compensated Temp Range
0 to 50
ºC
5
Operating Temp Range

-20 to 60

0 to 50

ºC

ºC

when using polyurethane cable

when using ETFE cable (3)

Protection Rating

IP 68, NEMA 6P

   

ELECTRICAL

Excitation
6 - 28
VDC
4
Input Current

8

11


0.5

mA

mA


mA
average current during data acquisition
peak current during data acquisition for addressed sensor (~40mS duration)
Quiescent
Interface

SDI-12
RS-485

3 version 1.3 SDI-12 protocol

PHYSICAL

Approximate Weight

0.75 (340)
0.05 (79)

lbs (g)
lbs/ft (g/m)
transducer
cable
Cable
 
Jacket Material


  Pull Strength

  Number of Conductors
 
Conductor Size


Polyurethane (std)
ETFE (4) (opt)

200 (90)

4

22





lbs (kg)



AWG

Tefzel®, Teflon® and Kevlar® are registered trademarks of DuPont.
Cable Seal

Molded polyurethane
Viton® Gland

  for polyurethane cable
for ETFE cable

LIGHTNING PROTECTION (OPTIONAL) (5)

Life Expectancy
> 1000 operations
2
Peak Clamping Voltage

36 volts

 
Response Time

< 10 nsecs

1  
   
(1)
Intermediate level ranges are available.
(2)
Total error band includes the combined errors due to nonlinearity, hysteresis, nonrepeatability and thermal effects over the compensated temperature range per ISA S51.1.
(3)
-20ºC to 50ºC for level ranges <= 100 ft (70m) H2O when using ETFE cable.
(4)

ETFE is a fluoropolymer (Teflon® derivative) material, Tefzel® or equivalent.

(5)
The power supply needs to be limited to 150 mA to avoid lock up of the gas tube after a suppression event.

Specifications subject to change without notice.

 

 


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