
RP - Resistive Chain Level Measurement
Flexible by Design
The RP level sensor is designed for use in the chemical, oil, shipping, food processing, waste
treatment, and many other industries. Each RP is manufactured to the users specications making it
t to work precisely according to the application requirements.
Features
• Continuous level indication
• Wide choice of materials
• Durable oat matched to liquid specic gravity
• Resistive chain or loop powered 4-20 mA output
• Hazardous location approvals - Intrinsically safe
Automation Products Group, Inc. www.apgsensors.com
tel. 888.525.7300 sales@apgsensors.com

RP Specications
Float E
2.01”
51 mm
4.5”
114 mm
4.5”
114 mm
Float G
Float F
2.17”
55 mm
1.48”
38 mm
Performance
• Resolution:
RPX/RPE: 6 mm (0.25 in.)
• Accuracy:
RPX/RPE: 3 mm (0.12 in.
Connectivity
• Output: 4-20 mA, Resistive
1.77”
45 mm
1.89”
48 mm
1.93”
49 mm
1.97”
50 mm
0.54”
13.8 mm
M
S2
S1
L
Environmental
• Operating Temperature:
RPX/RPE: 14º to 185ºF (-10º to 85ºC)
• Maximum Pressure:
RPX/RPE: 72.5 PSI (5 bar)
• NEMA 4 & 7, IP65
Certication
• RPX:
CSA Hazardous
Class 1, Div. 1; Groups C & D (Max 40ºC)
Class 1, Div. 2; Groups C & D (Max 85ºC)
CSA Intrinsically Safe
Class 1, Zone 1; Ex d IIB T3
Exia Class 1 Div. 1; Groups C & D T3C (Max 85ºC)
• RPE: General Purpose
Electrical
• Supply Voltage:
RPX: 12-24 VDC
Physical
• Housing:
RPX/RPE: Aluminum Die Cast
• Stem Length:
RPX/RPE: 1829 mm (72 in.)
• Cable Entry:
RPX/RPE: 3/4 in. NPT / 1/2 in. NPT
Automation Products Group, Inc. www.apgsensors.com
tel. 888.525.7300 sales@apgsensors.com
2

Options
Part Number: RP - _____ - _____ - _____ - _____ - _____ - _____ - _____
A B C D E F G
A. Model
□ X-A Hazardous, 4-20 mA output
□ X-R Hazardous, resistive output
□ X-I Intrinsic safety, 4-20 mA output
□ E-A General purpose, 4-20 mA output
□ E-R General purpose, resistive output
B. Mounting Type
□ 0 Flat face ange
□ 1 Raised face ange
□ 2 Slide ange
□ 3 Sanitary ferrule
□ 4 Plug mounted from outside of tank
C. Mounting Option and Size
□ A ANSI ange 150# (Size=2, 2.5, 3, 4)
□ J JIS ange 10 kg/cm2 (Size=2)
□ D DIN ange 10 kg/cm2 (Size=50)
□ SF 3A sanitary ferrule (Size=2.5, 3, 4)
□ T NPT plug (Size=2, 2.5, 3)
□ G PF plug (Size=2, 2.5, 3)
□ R RT plug (Size=2, 2.5, 3)
□ X Other
E. Stem Finish (RPX/RPE)
□ 1 Brushed 320 grit
□ 2 Sanitary
F. Float Type
□ E 316L SS 53 mm Round (0.57 SG)
□ F 316L SS 55h x 38w mm Sanitary (0.65 SG)
□ G Buna 45h x 48w mm (0.39 SG)
G. Stem Length in Inches
□ RPX/RPE Min. 12 in. - Max 72 in.
Wiring (4-20mA output option shown)
STI 2001
D2
RED
4 to 20ma Out
+24vdc
J1
C1
D1
C3
BLK
R5
WH OUT 24V
R1
R3
R9
U2
SPANOFFSET
R6
R2
C2
U3
Q1
R7
R8
R4
D. Material
□ S 304 SS
□ S6 316L SS
RP Accessories
Please order separately by part number.
Part Number Description
135414 Float stop
135396 Bottom bracket
125603 Right angle bracket pipe clamp
125701 RST-5001 Internet Module
4.25
Ammeter
COM
mA
Choose Loop Resistance
Power Supply
(24Vdc)
+
-
Automation Products Group, Inc. www.apgsensors.com
tel. 888.525.7300 sales@apgsensors.com
3

Automation Products Group, Inc. www.apgsensors.com
tel. 888.525.7300 sales@apgsensors.com
4