Manufacturers
MOORE PRODUCTS 59R
Description
Moore Products 59R Derivative Relay - Inverse type
Part Number
59R
Price
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Manufacturer
MOORE PRODUCTS
Lead Time
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Category
PRODUCTS - 5
Features
- Derivative action compensates for process and measurement
- for pneumatic circuit flexibility
- Force-balance principle produces a proportional output
- lags for stable pneumatic control
Datasheet
Extracted Text
Relays Series 59 Derivative Relays Introduction Features & Benefits Force-balance principle produces a proportional output for pneumatic circuit flexibility Derivative action compensates for process and measurement lags for stable pneumatic control Description The Series 59 Derivative Relays are pneumatic relays that operate on the force-balance principle. As such, they produce an output equal to the input signal plus or minus an amount proportional to the rate of input change. The direct derivative output is the input signal plus an amount proportional to the rate of the input change. Inverse derivative output is the input minus an amount proportional to the rate of the input change. Since the magnitude of the derivative response is proportional to the rate of input change, a steady rate of input change will make the output lead (or lag) the input by a definite time. This lead (or lag) time is the derivative time. The Model 59 is a 3 mode controller which includes an integral derivative section, where the derivative action on the input precedes proportional and reset responses. This arrangement, which is the only one that can prevent overshooting on start- Minimum Output Pressure up, also provides the most effective control following any large load change. 0.3 psig with 20 psig supply Input/Output Ratio 1:1 (±0.5%) for steady state conditions Specifications Response Level Operating Range 0.01% of full scale 3-15 psig normal (50 psig maximum for input and output) Air Consumption Supply Pressure Less than 0.08 scfm at balance Normal: 20 psig Pneumatic Minimum: 3 psig above maximum output Connections: 1/4" NPT Maximum: 60 psig7 Ambient Temperature Limits Maximum Overload Protection - 40 to 180°F (- 40 to 82°C) 100 psig to any connection 7.17 Relays Series 59 Derivative Relays Technical data Model Designation Mounting Dimensions Derivative Model Derivative Derivative Time Needle Valve Number Action Gain (MINUTES) Graduations 59D Direct 6:1 .05-20 0.5-20 59DF Direct, Fast 6:1 .005-2.0 .01-5 1,2 59DH Direct High Gain 30:1 .05-20 .05-20 59R Inverse 1:6 .05-20 .05-20 59RF Inverse, Fast 1:6 .005-2.0 .01-5 7 1) Model 59DH cannot be converted to an inverse unit. 2) The derivative time of the Model 59DH may be further increased by adding an external volume chamber that connects into the side of the derivative unit. This volume chamber increases the needle valve setting by a factor of ten. 7.18
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