Series 195 Two Stage Top Mount Displacer Type Level Control

Fixed or Adjustable Deadband, For Pumps or Alarms

One of our most versatile level controls, the Series 190 can be used on all types of tank or sump level control applications.

Mercoid® Displacer Controls use displacers that do not float on the surface of liquids, but are suspended on a coil spring. They work on the principle that submerged solids weigh less in liquids, and as the liquid level rises and their weight decreases, the tension on the spring by which they are suspended is decreased. Because they work on a different principle than float type liquid level controls, displacers are not affected by turbulence or pressure, and are excellent for applications with viscous or dirty liquids.

Models & Ordering

Build Your Custom Part. Use our Product Configurator

Specifications

Service:
Compatible liquids.
Wetted Materials:
Cable, Spring and Stops: 316 SS. Optional Inconel® spring. Displacers: porcelain. Optional 304 SS, 316 SS, or carbon graphite.
Temperature Limits:
32 to 200°F (0 to 93.3°C). Higher ratings available.
Pressure Limit:
125 psig (8.6 bar). Higher ratings available.
Enclosure Rating:
General purpose, watertight, explosion-proof or explosion-proof/vapor-proof.
Switch Type:
Snap switch, hermetically sealed snap switch or mercury switch.
Electrical Rating:
Snap Switch: 12A @ 120 VAC, 5A @ 240 VAC, 0.5A @ 125 VDC resistive, 0.25A @ 250 VDC resistive. Hermetically Sealed Snap Switch: 5A @ 120 VAC, 5A @ 240 VAC, 5A @ 30 VDC resistive. Mercury Switch: 4A @ 120 VAC/DC, 2A @ 240 VAC/DC. Higher contact ratings available for the mercury switch.
Electrical Connections:
Screw terminal.
Conduit Connection:
3/4" female NPT.
Process Connections:
NPT or flange.
Mounting Orientation:
Vertical.
Set Point Adjustment:
Adjustable by moving displacers, see dimension chart for minimum and maximum values.
Weight:
General purpose or watertight enclosure with 4" 125# cast iron flange approximately 28 lb (12.7 kg); Explosion-proof or explosion-proof/vapor-proof approximately 32 lb (14.5 kg).
Agency Approvals:
UL, none on HM switch.
Specific Gravity:
Standard is 1.0. Specify when ordering by replacing 1.0 in model number with specific gravity setting desired. Settable range is 0.5 to 1.2.
Cable Length:
Up to 50 ft.

Model Chart

 
EXAMPLE 195 4 G 4810-10 P A 1.0 0 INC Series 195-4-G-4810-10-P-A-1.0-0-INC Level Control, SPDT, porcelain displacers, 10 ft. cable, 1.0 specific gravity, 3/4" screw connection, with Inconel spring.
SERIES 195
A195
                Two Stage Top Mount Displacer Control, 2-1/2” diameter displacers
Two Stage Top Mount Displacer Control, 2” diameter displacers
CONSTRUCTION   4
6
7
8
              Stage Operation 4
Stage Operation 6
Stage Operation 7
Stage Operation 8
ENCLOSURES     G
WT
E
EV
            General Purpose
Watertight
Explosion-proof
Explosion-proof & Vapor-proof
CIRCUITS
(Three Stage)
      48XX-XX
78XX-XX
78XXHM-XX
98XX-XX
          See Chart A below
See Chart B below
See Chart B below
See Chart B below
DISPLACERS         P
S
S304
K
I
        Porcelain (not suitable for non-vented steam systems)
316SS
304SS
Karbate
Intrf 3-1/2" dia. x 10"
CABLE LENGTH           A
B
C
D
E
F
G
      10 ft.
15 ft.
20 ft.
25 ft.
30 ft.
40 ft.
50 ft.
SPECIFIC GRAVITY             1.0     Customer specified.
FLANGE               00
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
6S
7S
8S
9S
10S
11S
12S
13S
14S
15S
  3" NPT connection
3/4" Screw connection
3" 125# cast iron (A195 only)
4" 125# cast iron
5" 125# cast iron
6" 125# cast iron
8" 125# cast iron
3" 150# RF carbon steel
4" 150# RF carbon steel
5" 150# RF carbon steel
6" 150# RF carbon steel
8" 150# RF carbon steel
3" 300# RF carbon steel
4" 300# RF carbon steel
5" 300# RF carbon steel
6" 300# RF carbon steel
8" 300# RF carbon steel
3" 250# RF cast iron
4" 250# RF cast iron
5" 250# RF cast iron
6" 250# RF cast iron
8" 250# RF cast iron
3" 150# RF 316SS
4" 150# RF 316SS  
5" 150# RF 316SS  
6" 150# RF 316SS  
8" 150# RF 316SS  
3" 300# RF 316SS
4" 300# RF 316SS  
5" 300# RF 316SS  
6" 300# RF 316SS  
8" 300# RF 316SS  
OPTIONS                 INC
R1
STW
01
02
12
23720
Inconel Spring
Manual Reset Lower Stage
SS Tag Wired
Breather Only (E-Housing only)
Drain Only (E-Housing only)
Breather and Drain (E-Housing only)
Fungus Proofing
CHARTS A & B - ELECTRICAL CIRCUITS AND RATINGS

 

SWITCH TYPE
SWITCH ACTION
ELECTRICAL RATINGS IN AMPS
ORDERING CODE
AC
DC
120V
240V
440V
30V
125V
250V
LOWER
UPPER
CHART A
Mercury
Contacts
SPST Open on Level Fall
10
5
3†
 
10
5
4821
-21
SPST Open on Level Rise
10
5
3†
 
10
5
4820
-20
SPDT One switch
4
2
1†
 
4
5
4810
-10
SPDT Two switches E.I.*
10
5
3†
 
10
5
4815
-15
DPST Two switches E.I.* Open on Level Fall
10
5
3†
 
10
5
4813
-13
DPST Two switches E.I.* Open on Level Rise
10
5
3†
 
10
5
4814
-14
DPDT Two SPDT switches
4
2
1†
 
4
2
4806
-06
CHART B
Snap Action
Contacts
SPDT One switch
12
5
3†
 
0.5†
0.25†
7810
-10
DPDT Two SPDT switches
12
5
3†
 
0.5†
0.25†
7806
-06
SPDT One hermetically sealed switch
5
5
 
5†
 
 
7810HM
-10HM
DPDT Two hermetically sealed SPDT switches
5
5
 
5†
 
 
7806HM
-06HM
DPDT Two SPDT switches
10
3
 
 
10‡
3‡
9806
-06
SPDT One switch
10
3
 
 
10‡
3‡
9810
-10

*Electrically Independent; †Resistive; ‡10 amp inductive (polarized) at 125 VDC.

Product Literature

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