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Series
500

Insertion Type Level Control
Adjustable Deadband, Weatherproof Enclosure

CONSULT FACTORY FOR ORDERING AND PRICING

MODEL CHART - SERIES 500
EXAMPLE 500T WT 7810 10 C1 55 12 500T-WT-7810-10-C1-55-12 Liquid Level Control, NEMA 4X weatherproof enclosure, 2-1/2" NPT cast steel threaded chamber for direct tank mounting, SPDT snap action switch, fixed deadband, automatic reset, operating pressure 200 psi (14 bar) to 425°F (218°C), minimum specific gravity 0.55 with 6" (152 mm) float road and 2-1/2" x 4" (64 x 102 mm) float.   
CONSTRUCTION 500T             2-1/2" NPT threaded process connection. UL
500F             Flanged direct mount process connection, 2-1/2" 125# cast iron flange furnished for (C) cast iron chamber, 2-1/2" NPT 150# carbon steel flange furnished for (C1) cast steel chamber, 2-1/2" NPT 150# 316SS flange furnished for (C216) cast 316SS chamber, other flange sizes available, consult factory. UL
ENCLOSURE   

G

          General purpose, NEMA 1. UL
  WT           Water-tight, suitable for NEMA 1, 2, 3, 4, 4X. UL
  E           Explosion-proof, Class I Groups B, C, D, Class II Groups E, F, G, Division I and II, NEMA 7, 9. UL
  EV           Explosion-proof, vapor proof, Class I Groups B, C, D, Class II Groups E, F, G, Division I and II, NEMA 7, 9. UL
CIRCUIT
(single stage)
    XXXX         Snap action or mercury switch, see chart A and B below.  
    78XXHM         Hermetically sealed snap switch, see chart B below.  
CHAMBER (single stage)          C 55   Cast iron chamber, supplied with 6" (152 mm) 316SS float rod, 2-1/2" x 4" (64 x 102 mm) 316SS float and 316SS trim, pressure rating 200 psig (14 bar) to 425°F (218°C) maximum, minimum specific gravity 0.55. UL
        C 80   Cast iron chamber, supplied with 6" (152 mm) 316SS float rod, 2-1/2" (64 mm) 316SS ball float and 316SS trim, pressure rating 400 psig (28 bar) to 425°F (218°C) maximum, minimum specific gravity 0.80. UL
        C1 55   Cast steel chamber, supplied with 6" (152 mm) 316SS float rod, 2-1/2" x 4" (64 x 102 mm) 316SS float and 316SS trim, pressure rating 200 psig (14 bar) to 425°F (218°C) maximum, minimum specific gravity 0.55. UL
        C1 80   Cast steel chamber, supplied with 6" (152 mm) 316SS float rod, 2-1/2" (64 mm) 316SS ball float and 316SS trim, pressure rating 400 psig (28 bar) to 425°F (218°C) maximum, minimum specific gravity 0.80. UL
        C216 55   Cast 316SS chamber, supplied with 6" (152 mm) 316SS float rod, 2-1/2" x 4" (64 x 102 mm) 316SS float and 316SS trim, pressure rating 200 psig (14 bar) to 425°F (218°C) maximum, minimum specific gravity 0.55. UL
        C216 80   Cast 316SS chamber, supplied with 6" (152 mm) 316SS float rod, 2-1/2" (64 mm) 316SS ball float and 316SS trim, pressure rating 400 psig (28 bar) to 425°F (218°C) maximum, minimum specific gravity 0.80. UL
CIRCUIT
(two stage)
    XXXX XX       Snap action or mercury switch, see chart A and B below.  
    78XXHM         Hermetically sealed snap switch, consult factory.  
CHAMBER (two stage)          C 70   Cast iron chamber, supplied with 6" (152 mm) 316SS float rod, 2-1/2" x 4" (64 x 102 mm) 316SS float and 316SS trim, pressure rating 200 psig (14 bar) to 425°F (218°C) maximum, minimum specific gravity 0.70. UL
        C1 70   Cast steel chamber, supplied with 6" (152 mm) 316SS float rod, 2-1/2" x 4" (64 x 102 mm) 316SS float and 316SS trim, pressure rating 200 psig (14 bar) to 425°F (218°C) maximum, minimum specific gravity 0.70. UL
        C216 70   Cast 316SS chamber, supplied with 6" (152 mm) 316SS float rod, 2-1/2" x 4" (64 x 102 mm) 316SS float and 316SS trim, pressure rating 200 psig (14 bar) to 425°F (218°C) maximum, minimum specific gravity 0.70. UL
OPTIONS               12" (305 mm), 18" (457 mm), or 24" (610 mm) float rods, must be specified on order, minimum specific gravity will increase.  
                  12  Breather and drain for E type enclosure. Recommended for high humidity or outdoor service.    

CHARTS A & B - ELECTRICAL CIRCUITS AND RATINGS
SWITCH TYPE
SWITCH ACTION
ELECTRICAL RATINGS IN AMPS
ORDERING CODE
 
 
 
AC
DC
SINGLE STAGE
TWO STAGE
120V
240V
440V
30V
125V
250V
LOWER
UPPER
CHART A
Mercury Contacts
SP-ST open on level FALL
10
5
3†
 
10
5
-4820
-4820
-20
UL
SP-ST open on level RISE
10
5
3†
 
10
5
-4821
-4821
-21
UL
SP-DT one switch
4
2
1†
 
4
2
-4810
-4810
-10
UL
SP-DT two switches E.I.*
10
5
3†
 
10
5
-4815
-4815
-15
UL
DP-ST two switches E.I.* open on level FALL
10
5
3†
 
10
5
-4814
-4814
-14
UL
DP-ST two switches E.I.* open on level RISE
10
5
3†
 
10
5
-4813
-4813
-4813
UL
DP-DT two SP-DT switches
4
2
1†
 
4
2
-4806
-4806
-06
UL
CHART B
snap action contacts
SP-DT one switch
12
5
3†
 
0.5**
0.25**
-7810
-7810
-10
UL
DP-DT Two SP-DT switches
12
5
3†
 
0.5**
0.25**
-7806
-7806
-06
UL
SP-DT one hermetically sealed switch
5
5
 
5**
 
 
-7810HM
-7810HM
-10HM
 
DP-DT two hermetically sealed SP-DT switches
5
5
 
5**
 
 
-7806HM
-7806HM
-06HM
 
DP-DT two SP-DT switches
10
3
 
 
10‡
3‡
-9806
-9806
-06
 
SP-DT one switch
10
3
 
 
10‡
3‡
-9810
-9810
-10
 

†Available on special order, change 1st digit in ordering code from 4 to 5 or 7 to 8, i.e., -4820 becomes -5820, -7810 becomes -8810, etc.
‡10 amp inductive (polarized) at 125 VDC.
*Electrically Independent.
**Resistive.

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